Locking plug assembly



FIG. 1 is a front elevation view of the locking plug assembly of the present invention;

FIG. 2 is a back elevation view of the locking plug assembly of FIG. 1;

FIG. 3 is a left side elevation view of the locking plug assembly of FIG. 1;

FIG. 4 is a right side elevation view of the locking plug assembly of FIG. 1;

FIG. 5 is a top plan view of the locking plug assembly of FIG. 1;

FIG. 6 is a bottom plan view of the locking plug assembly of FIG. 1; and,

FIG. 7 is a perspective view of the locking plug assembly of FIG. 1. 

The ornamental design for a locking plug assembly, as shown and described. 